Latest cybersecurity reporting from selected sources.

Microsoft Corp. today released software updates to plug at least 570 security holes in its Windows operating systems and other software, almost triple the number of vulnerabilities the software giant fixed in its record-smashing Patch Tuesday release last month. Microsoft attributed the burgeoning patch counts to vulnerability discoveries aided by artificial intelligence.

A security researcher has released a new Microsoft Defender zero-day exploit named "RoguePlanet" just hours after Microsoft fixed two previously disclosed flaws during June 2026 Patch Tuesday. [...]

Microsoft has unveiled a new multi-model artificial intelligence (AI)-driven system called MDASH to facilitate vulnerability discovery and remediation at scale, adding that it's being tested by some customers as part of a limited private preview

Microsoft today pushed software updates to fix a staggering 167 security vulnerabilities in its Windows operating systems and related software, including a SharePoint Server zero-day and a publicly disclosed weakness in Windows Defender dubbed "BlueHammer." Separately, Google Chrome fixed its fourth zero-day of 2026, and an emergency update for Adobe Reader nixes an actively exploited flaw that can lead to remote code execution.

Microsoft today issued patches to plug at least 113 security holes in its various Windows operating systems and supported software. Eight of the vulnerabilities earned Microsoft's most-dire "critical" rating, and the company warns that attackers are already exploiting one of the bugs fixed today.

Microsoft this week pushed security updates to fix more than 60 vulnerabilities in its Windows operating systems and supported software, including at least one zero-day bug that is already being exploited. Microsoft also fixed a glitch that prevented some Windows 10 users from taking advantage of an extra year of security updates, which is nice because the zero-day flaw and other critical weaknesses patched today affect all versions of Windows, including Windows 10.

Microsoft initially fixed CVE-2025-59287 in the WSUS update mechanism in the October 2025 Patch Tuesday release, but the company has now issued a second, out-of-band update for the flaw, which is under attack in the wild.

Microsoft has fixed over 170 CVEs in October’s Patch Tuesday, including six zero-day vulnerabilities

Microsoft has fixed over 80 vulnerabilities including two publicly disclosed zero-days in its latest Patch Tuesday release

September bundle the largest this year, and possibly the most serious Patch Tuesday is next week, but Android is ahead of the game, dropping its biggest patch bundle this year while attackers actively exploit two of the now-fixed flaws.…

Microsoft has fixed seven zero-days this Patch Tuesday, including one not currently being actively exploited

Don't be a turkey – get these fixed Patch Tuesday Patch Tuesday has swung around again, and Microsoft has released fixes for 89 CVE-listed security flaws in its products – including two under active attack – and reissued three more.…

The C in these CVEs stands for Confusing Analysis Microsoft, in a low-key update to its September Patch Tuesday disclosures, has confirmed a just-fixed Internet Explorer vulnerability was exploited as a zero-day before it could be patched.…

Plus more pain for Intel which fixed 43 bugs, SAP and Adobe also in on the action Patch Tuesday Microsoft has disclosed 90 flaws in its products – six of which have already been exploited – and four others that are listed as publicly known.…

Plus more pain for Intel which fixed 43 bugs, SAP and Adobe also in on the action Patch Tuesday Microsoft has disclosed 90 flaws in its products – six of which have already been exploited – and four others that are listed as publicly known.…

Plus: Google Chrome, Apple bugs also exploited in the wild Happy May Patch Tuesday. We've got a lot of vendors joining this month's patchapalooza, which includes a handful of bugs that have been exploited — either in the wild or at Pwn2Own — and now fixed by Microsoft, Apple, Google and VMware.…

Plus: Adobe, SAP, Fortinet, VMware, Cisco issue pressing updates Patch Tuesday Microsoft fixed 149 security flaws in its own products this week, and while Redmond acknowledged one of those vulnerabilities is being actively exploited, we've been told another hole is under attack, too.…

Microsoft has fixed two actively exploited zero-day vulnerabilities during the April 2024 Patch Tuesday, although the company failed to initially tag them as such. [...]

If only Patch Tuesdays came around infrequently -- like total solar eclipse rare -- instead of just creeping up on us each month like The Man in the Moon. Although to be fair, it would be tough for Microsoft to eclipse the number of vulnerabilities fixed in this month's patch batch -- a record 147 flaws in Windows and related software.

Microsoft warned today in an updated security advisory that a critical vulnerability in Exchange Server was exploited as a zero-day before being fixed during this month's Patch Tuesday. [...]